A UMass Boston student was indecently assaulted as she walked toward the Sydney Street entrance of the JFK/UMass MBTA station in Dorchester Tuesday afternoon, MBTA Transit Police said.

The woman reported to Transit Police officers that she was indecently assaulted around 12:30 p.m. while walking through the parking area near the entrance to the Red Line station.

The attacker was described as a white male in his mid-20s, about 5-foot-10, with a heavy build and a scruffy brown beard. At the time of the incident, he was wearing a blue hooded sweatshirt, light-colored jeans, and sneakers, police said

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UMass Boston has alerted their students of the incident, and warned students to stay in well-lighted areas, not to talk to strangers, and to report any suspicious activity to the campus police.

Transit Police urged anyone with information on the assault to call 617-222-1050 or by texting the tip to 873873.